204025 has 6 divisors (see below), whose sum is σ = 253022. Its totient is φ = 163200.

The previous prime is 204023. The next prime is 204047. The reversal of 204025 is 520402.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6889 + 197136 = 83^2 + 444^2 .

It is not a de Polignac number, because 204025 - 2¹ = 204023 is a prime.

It is a Duffinian number.

204025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 203996 and 204014.

It is not an unprimeable number, because it can be changed into a prime (204023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4056 + ... + 4105.

2²⁰⁴⁰²⁵ is an apocalyptic number.

204025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

204025 is a deficient number, since it is larger than the sum of its proper divisors (48997).

204025 is an equidigital number, since it uses as much as digits as its factorization.

204025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8171 (or 8166 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 204025 is about 451.6912662428. The cubic root of 204025 is about 58.8700577950.

Adding to 204025 its reverse (520402), we get a palindrome (724427).

The spelling of 204025 in words is "two hundred four thousand, twenty-five".